[Comment: For dates of non-regulatory government publications,
publications of recognized organizations and associations, federal rules, and
federal statutory provisions referenced in this rule, see the last paragraph of
rule
3745-76-01 of the
Administrative Code titled"Incorporation by reference."]
(A)
(1) The
landfill owner or operator shall calculate the NMOC emission rate using either
the equation provided in paragraph (A)(1)(a) of this rule or the equation
provided in paragraph (A)(1)(b) of this rule. Both equations may be used if the
actual year-to-year solid waste acceptance rate is known, as specified in
paragraph (A)(1)(a) of this rule, for part of the life of the landfill and the
actual year- to- year solid waste acceptance rate is unknown, as specified in
paragraph (A)(1)(b) of this rule, for part of the life of the landfill. The
values to be used in both equations are 0.05 per year for k, one hundred
seventy cubic meters per megagram for Lolo, and four thousand parts per million
by volume as hexane for the CNMOC. For landfills located in geographical areas
with a thirty year annual average precipitation of less than twenty five
inches, as measured at the nearest representative official meteorologic site,
the k value to be used is 0.02 per year.
(a)
The following equation shall be used if the actual year-to-year solid waste
acceptance rate is known.
For Equation - To obtain the appendix, table, image, etc.
please call LSC's ERF Helpdesk at 614-387-2078 or send an email to
erfhelpdesk@lsc.state.oh.us.
Where, MNMOC = total NMOC emission rate from the landfill,
megagrams per year
k = methane generation rate constant, year-1
Lo = methane generation potential, cubic meters per megagram
solid waste
Mi = mass of solid waste in the ith section, megagrams
ti = age of the ith section, years
CNMOC = concentration of NMOC, parts per million by volume as
hexane 3.6 X 10-9 = conversion factor
The mass of nondegradable solid waste may be subtracted from
the total mass of solid waste in a particular section of the landfill when
calculating the value for Mi if documentation of the nature and amount of such
wastes is maintained.
(b)
The following equation shall be used if the actual year-to-year solid waste
acceptance rate is unknown.
MNMOC = 2LoR (e-kc-e-kt) (CNMOC) ( 3.6 x 10-9)
Where,
MNMOC= mass emission rate of NMOC, megagrams per year
Lo = methane generation potential, cubic meters per megagram
solid waste
R = average annual acceptance rate, megagrams per year
k = methane generation rate constant, year-1
t = age of landfill, years
CNMOC = concentration of NMOC, parts per million by volume as
hexane
c = time since closure, years. For active landfill c = 0 and
e-kc =1
3.6 x 10-9 = conversion factor
The mass of nondegradable solid waste may be subtracted from
the average annual acceptance rate when calculating a value for R, if
documentation of the nature and amount of such wastes is maintained.
(2) Tier 1 one. The
owner or operator shall compare the calculated NMOC mass emission rate to the
standard of fifty megagrams per year.
(a) If
the NMOC emission rate calculated in paragraph (A)(1) of this rule is less than
fifty megagrams per year, then the landfill owner shall submit an emission rate
report as provided in paragraph (B)(1) of rule
3745-76-12
of the Administrative Code, and shall recalculate the NMOC mass emission rate
annually as required under paragraph (B)(1) of rule
3745-76-07
of the Administrative Code.
(b) If
the calculated NMOC emission rate is equal to or greater than fifty megagrams
per year, then the landfill owner shall either comply with paragraph (B)(2) of
rule
3745-76-07
of the Administrative Code, or determine a site-specific NMOC concentration and
recalculate the NMOC emission rate using the procedures provided in paragraph
(A)(3) of this rule.
(3)
Tier 2. The landfill owner or operator shall determine the NMOC concentration
using the following sampling procedure. The landfill owner or operator shall
install at least two sample probes per hectare of landfill surface that has
retained waste for at least two years. If the landfill is larger than twenty
five hectares in area, only fifty samples are required. The sample probes
should be located to avoid known areas of nondegradable solid waste. The owner
or operator shall collect and analyze one sample of landfill gas from each
probe to determine the NMOC concentration using Method 25 or Method 25C of
Appendix A of 40 CFR Part 60. Method 18 of Appendix A of 40 CFR Part 60 may be
used to analyze the samples collected by the Method 25 or 25C sampling
procedure. If more than the required number of samples are taken, all samples
shall be used in the analysis. The landfill owner or operator shall divide the
NMOC concentration from Method 25 or Method 25C of Appendix A of 40 CFR part 60
by six to convert from CNMOC as carbon to CNMOC as hexane.
(a) Taking composite samples from different
probes into a single cylinder is allowed; however, equal sample volumes must be
taken from each probe. For each composite, the sampling rate, collection times,
beginning and ending cylinder vacuums, or alternative volume measurements must
be recorded to verify that composite volumes are equal. Composite sample
volumes should not be less than one liter, unless evidence can be provided to
substantiate the accuracy of smaller volumes. The compositing shall be
terminated before the cylinder approaches ambient pressure where measurement
accuracy diminishes.
(b) If using
Method 18, the owner or operator must identify all compounds in the sample,
and, at a minimum, test for those compounds published in the most recent
"Compilation of Air Pollutant Emission Factors (AP-42)", minus carbon monoxide,
hydrogen sulfide, and mercury. At a minimum, the instrument must be calibrated
for each of the compounds on the list. The concentration of each Method 18
compound shall be converted to CNMOC as hexane by multiplying it by the ratio
of its carbon atoms divided by six.
(c) If the landfill has an active or passive
gas removal system in place, Method 25 or Method 25C samples may be collected
from these systems instead of surface probes, provided the removal system can
be shown to provide sampling as representative as the two sampling probe per
hectare requirement. For active collection systems, samples may be collected
from the common header pipe before the gas moving or condensate removal
equipment. For these systems, a minimum of three samples must be collected from
the header pipe.
(d) The landfill
owner or operator shall recalculate the NMOC mass emission rate using the
equations provided in paragraph (A)(1)(a) or (A)(1)(b) of this rule and using
the average NMOC concentration from the collected samples instead of the
default value in the equation provided in paragraph (A)(1) of this
rule.
(e) If the resulting mass
emission rate calculated using the site-specific NMOC concentration is equal to
or greater than fifty megagrams per year, then the landfill owner or operator
shall either comply with paragraph (B)(2) of rule
3745-76-07
of the Administrative Code, or determine the site-specific methane generation
rate constant and recalculate the NMOC emission rate using the site-specific
methane generation rate using the procedure specified in paragraph (A)(4) of
this rule.
(f) If the resulting
NMOC mass emission rate is less than fifty megagrams per year, the owner or
operator shall submit a periodic estimate of the emission rate report as
provided in paragraph (B)(1) of rule
3745-76-12
of the Administrative Code and retest the site-specific NMOC concentration
every five years using the methods specified in this rule.
(4) Tier 3. The site-specific methane
generation rate constant shall be determined using the procedures provided in
Method 2E of Appendix A of 40 CFR Part 60. The landfill owner or operator shall
estimate the NMOC mass emission rate using equations in paragraph(A)(1)(a) or
(A)(1)(b) of this rule and using a site-specific methane generation rate
constant k, and the site-specific NMOC concentration as determined in paragraph
(A)(3) of this rule instead of the default values provided in paragraph (A)(1)
of this rule. The landfill owner or operator shall compare the resulting NMOC
mass emission rate to the standard of fifty megagrams per year.
(a) If the NMOC mass emission rate as
calculated using the site-specific methane generation rate and concentration of
NMOC is equal to or greater than fifty megagrams per year, the owner or
operator shall comply with paragraph (B)(2) of rule
3745-76-07
of the Administrative Code.
(b) If
the NMOC mass emission rate is less than fifty megagrams per year, then the
owner or operator shall submit a periodic emission rate report as provided in
paragraph (B)(1) of rule
3745-76-12
of the Administrative Code and shall recalculate the NMOC mass emission rate
annually, as provided in paragraph (B)(1) of rule
3745-76-12
of the Administrative Code using the equations in paragraph (A)(1) of this rule
and using the site-specific methane generation rate constant and NMOC
concentration obtained in paragraph (A)(3) of this rule. The calculation of the
methane generation rate constant is performed only once, and the value obtained
from this test shall be used in all subsequent annual NMOC emission rate
calculations.
(5) The
owner or operator may use other methods to determine the NMOC concentration or
a site-specific k as an alternative to the methods required in paragraphs
(A)(3) and (A)(4) of this rule if the method has been approved by the director.
(B) After the
installation of a collection and control system in compliance with rule
3745-76-10
of the Administrative Code, the owner or operator shall calculate the NMOC
emission rate for purposes of determining when the system can be removed as
provided in paragraph (B)(2)(e) of rule
3745-76-07
of the Administrative Code, using the following equation:
MNMOC = 1.89 x 10-3 QLFG CNMOC
Where,
MNMOC = mass emission rate of NMOC, megagrams per year
QLFG = flow rate of landfill gas, cubic meters per minute
CNMOC = NMOC concentration, parts per million by volume as
hexane
(1) The flow rate of landfill
gas, QLFG shall be determined by measuring the total landfill gas flow rate at
the common header pipe that leads to the control device using a gas flow
measuring device calibrated according to the provisions of section 4 of Method
2E of Appendix A of 40 CFR Part 60.
(2) The average NMOC concentration, CNMOC,
shall be determined by collecting and analyzing landfill gas sampled from the
common header pipe before the gas moving or condensate removal equipment using
the procedures in Method 25C or Method 18 of Appendix A of 40 CFR Part 60. If
using Method 18 of Appendix A of 40 CFR Part 60, the minimum list of compounds
to be tested shall be those published in the most recent "Compilation of Air
Pollutant Emission Factors (AP-42)". The sample location on the common header
pipe shall be before any condensate removal or other gas refining units. The
landfill owner or operator shall divide the NMOC concentration from Method 25C
of Appendix A of 40 CFR Part 60 by six to convert from CNMOC as carbon to CNMOC
as hexane.
(3) The owner or
operator may use another method to determine landfill gas flow rate and NMOC
concentration if the method has been approved by the director.
(C) When calculating emissions for
PSD purposes, the owner or operator of each MSW landfill subject to the
provisions of this chapter shall estimate the NMOC emission rate for comparison
to the major stationary source and significant levels in rule
3745-31-01 of the
Administrative Code using AP-42 or other approved measurement procedures. If a
collection system, which complies with the provisions in paragraph (B)(2) of
rule
3745-76-07
of the Administrative Code is already installed, the owner or operator shall
estimate the NMOC emission rate using the procedures provided in paragraph (B)
of this rule.
(D) For the
performance test required in paragraph (B)(2)(c)(ii) of rule
3745-76-07
of the Administrative Code, Method 25C or Method 18 of appendix A of 40 CFR
Part 60 shall be used to determine compliance with ninety eight weight-per cent
efficiency or the twenty parts per million volume outlet concentration level,
unless another method to demonstrate compliance has been approved by the
director as provided by paragraph (B)(2)(a)(ii) of rule
3745-76-07
of the Administrative Code. If using Method 18 of Appendix A of 40 CFR Part 60,
the minimum list of compounds to be tested shall be those published in the most
recent"Compilation of Air Pollutant Emission Factors (AP-42)". The following
equation shall be used to calculate efficiency:
Control efficiency = (NMOC IN - NMOC OUT) / (NMOC IN)
Where,
NMOC IN = mass of NMOC entering control device
NMOC OUT = mass of NMOC exiting control device
R.C. 119.032 review dates:
06/16/2011 and
06/16/2016
Promulgated
Under: 119.03
Statutory Authority: 3704.03(E)
Rule
Amplifies: 3704.03(A), 3704.03(E)
Prior Effective Dates: 1/31/98,
11/16/99, 10/10/06